245299443541 has 2 divisors, whose sum is σ = 245299443542. Its totient is φ = 245299443540.

The previous prime is 245299443539. The next prime is 245299443553. The reversal of 245299443541 is 145344992542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172370280625 + 72929162916 = 415175^2 + 270054^2 .

It is a cyclic number.

It is not a de Polignac number, because 245299443541 - 2¹ = 245299443539 is a prime.

Together with 245299443539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245299443941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122649721770 + 122649721771.

It is an arithmetic number, because the mean of its divisors is an integer number (122649721771).

Almost surely, 2^245299443541 is an apocalyptic number.

It is an amenable number.

245299443541 is a deficient number, since it is larger than the sum of its proper divisors (1).

245299443541 is an equidigital number, since it uses as much as digits as its factorization.

245299443541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 52.

The spelling of 245299443541 in words is "two hundred forty-five billion, two hundred ninety-nine million, four hundred forty-three thousand, five hundred forty-one".